ABAP Select data from SAP table ICRVMLSLSC into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ICRVMLSLSC table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to ICRVMLSLSC. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the ICRVMLSLSC table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_ICRVMLSLSC TYPE STANDARD TABLE OF ICRVMLSLSC,
      WA_ICRVMLSLSC TYPE ICRVMLSLSC,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <ICRVMLSLSC> TYPE ICRVMLSLSC.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ICRVMLSLSC.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ICRVMLSLSC
  INTO TABLE IT_ICRVMLSLSC.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICRVMLSLSC
*  INTO TABLE @DATA(IT_ICRVMLSLSC2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_ICRVMLSLSC INDEX 1 INTO DATA(WA_ICRVMLSLSC2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ICRVMLSLSC ASSIGNING <ICRVMLSLSC>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICRVMLSLSC>-MANDT = 1.
<ICRVMLSLSC>-SALESDOCUMENT = 1.
<ICRVMLSLSC>-SALESDOCUMENTITEM = 1.
<ICRVMLSLSC>-CMPLRQVERSUUID = 1.
<ICRVMLSLSC>-SUBSTANCEUUID = 1.

ENDLOOP.

LOOP AT IT_ICRVMLSLSC INTO WA_ICRVMLSLSC.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICRVMLSLSC-SUBSTANCEVARASSGMTUUID, sy-vline,
  WA_ICRVMLSLSC-SUBSTANCELISTITMUUID, sy-vline,
  WA_ICRVMLSLSC-LISTEDSUBSTANCE, sy-vline,
  WA_ICRVMLSLSC-CHMLCOMPOSITIONTYPE, sy-vline,
  WA_ICRVMLSLSC-PRODUCT, sy-vline,
  WA_ICRVMLSLSC-CHMLCMPLNCPRODUUID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICRVMLSLSC you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_ICRVMLSLSC TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_ICRVMLSLSC INTO WA_ICRVMLSLSC.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit ALPHA, internal->external for field SALESDOCUMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICRVMLSLSC-SALESDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICRVMLSLSC-SALESDOCUMENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LISTEDSUBSTANCE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICRVMLSLSC-LISTEDSUBSTANCE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICRVMLSLSC-LISTEDSUBSTANCE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field PRODUCT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_ICRVMLSLSC-PRODUCT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICRVMLSLSC-PRODUCT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SOLDTOPARTY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICRVMLSLSC-SOLDTOPARTY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICRVMLSLSC-SOLDTOPARTY.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_ICRVMLSLSC_STR, 
MANDT TYPE STRING,
SALESDOCUMENT TYPE STRING,
SALESDOCUMENTITEM TYPE STRING,
CMPLRQVERSUUID TYPE STRING,
SUBSTANCEUUID TYPE STRING,
SUBSTANCEVARASSGMTUUID TYPE STRING,
SUBSTANCELISTITMUUID TYPE STRING,
LISTEDSUBSTANCE TYPE STRING,
CHMLCOMPOSITIONTYPE TYPE STRING,
PRODUCT TYPE STRING,
CHMLCMPLNCPRODUUID TYPE STRING,
CHMLCMPLNCINFOUUID TYPE STRING,
CMPLRQVERSSUBSTLISTCNCTNTDNAME TYPE STRING,
COMPANYSUBSTANCENAME TYPE STRING,
NETAMOUNT TYPE STRING,
DISPLAYCURRENCY TYPE STRING,
SALESORGANIZATION TYPE STRING,
SOLDTOPARTY TYPE STRING,
COUNTRY TYPE STRING,
MATERIALGROUP TYPE STRING,
SALESDOCUMENTDATE TYPE STRING,
COMPANYCODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICRVMLSLSC_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_ICRVMLSLSC_STR-MANDT sy-vline 
WA_ICRVMLSLSC_STR-SALESDOCUMENT sy-vline 
WA_ICRVMLSLSC_STR-SALESDOCUMENTITEM sy-vline 
WA_ICRVMLSLSC_STR-CMPLRQVERSUUID sy-vline 
WA_ICRVMLSLSC_STR-SUBSTANCEUUID sy-vline 
WA_ICRVMLSLSC_STR-SUBSTANCEVARASSGMTUUID sy-vline 
WA_ICRVMLSLSC_STR-SUBSTANCELISTITMUUID sy-vline 
WA_ICRVMLSLSC_STR-LISTEDSUBSTANCE sy-vline 
WA_ICRVMLSLSC_STR-CHMLCOMPOSITIONTYPE sy-vline 
WA_ICRVMLSLSC_STR-PRODUCT sy-vline 
WA_ICRVMLSLSC_STR-CHMLCMPLNCPRODUUID sy-vline 
WA_ICRVMLSLSC_STR-CHMLCMPLNCINFOUUID sy-vline 
WA_ICRVMLSLSC_STR-CMPLRQVERSSUBSTLISTCNCTNTDNAME sy-vline 
WA_ICRVMLSLSC_STR-COMPANYSUBSTANCENAME sy-vline 
WA_ICRVMLSLSC_STR-NETAMOUNT sy-vline 
WA_ICRVMLSLSC_STR-DISPLAYCURRENCY sy-vline 
WA_ICRVMLSLSC_STR-SALESORGANIZATION sy-vline 
WA_ICRVMLSLSC_STR-SOLDTOPARTY sy-vline 
WA_ICRVMLSLSC_STR-COUNTRY sy-vline 
WA_ICRVMLSLSC_STR-MATERIALGROUP sy-vline 
WA_ICRVMLSLSC_STR-SALESDOCUMENTDATE sy-vline 
WA_ICRVMLSLSC_STR-COMPANYCODE sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.